. "Ba'athists" . "The First Battle of Fallujah, also known as Operation Vigilant Resolve, was an operation to root out extremist elements of Fallujah and an act of retaliation to, as well as an attempt to apprehend the perpetrators of, the killing of four U.S."@en . "(Operation Vigilant Resolve)"@en . . . "3,600" . "First Battle of Fallujah"@en . "Chechen volunteers" . "27 killed" . "Mujahideen" . . "al-Qaeda in Iraq" . "2004-05-01Z"^^ . . "AQI and its allies victory per some; Stalemate per others" . "2,200" . "Islamic Army of Iraq" . . . . "(GROM)" . . "Blackwater" .